.clear::after{
    content: '';
    display: block;
    clear: both;
  }
  
  #contentall{
    float: right;
    width: 90%;
    margin:0 1%;
    height: 922px;
  }
  #waimian{
    background-color: rgb(232,240,253);
  }
  #mytable{
    width: 100%;
    height: 650px;
    background-color: white;
    box-sizing: border-box;
    
  }
  #naviga{
    float: left;
  }
  
  tr,td,th{
    padding: 5px 10px;
    text-align: center;
    border: 1px solid rgb(243,243,243);
  }
  #header{
   
    height: 50px;
  }
  #jieyue{
    height: 50px;
    line-height: 50px;
    margin: 10px 0 5px 0;
    padding-left: 10px;
    background-color: white;
  }
  #btn1{
    margin: 10px 10px;
  }
  #caozuo{
    background-color: white;
  }
  #caozuoyou{
    float: right;
    margin: 10px 0;
  }
  #btn2{
    background-color: rgb(64,158,255);
    color: white;
    border: none;
    border-radius: 4px;
  }
  .wukuang{
    color: blue;
    border: none;
    font-size: 10px;
    background-color: white;
  }
  nav{
    float: right;
  }
  #xialalie{
    float: right;
    width: 80px;
    height: 33px;
    margin-left: 20px;
  }
  